Hi,
Excuse me for my poor English, I try the best I can :)

I have to anim the height of a Box, from 1.0 (100%) to a value I stored
in a var. I'm able to change uniformly the height, width and depth of
the box with a ScaleInterpolator, but not only the height of it, even
with a setScale(Vector3d) on the Transform3D I set as TransformAxis in
my ScaleInterpolator. The setScale works fine without animation.

Is it possible with a ScaleInterpolator ?

It'd be nice if someone could help me.

================== my code ==================

BranchGroup objRoot = new BranchGroup();

<SNIP>

// create the Box
Appearance boxAppeareance = new BarAppearance();
boxAppeareance.setColoringAttributes(new ColoringAttributes(
                       new Color3f(0.0f, 1.0f, 0.0f),
ColoringAttributes.SHADE_GOURAUD));
Box bar = new Box(0.5f, 0.1f, 0.5f, boxAppeareance);

<SNIP>

//===== THE ANIMATION =====

// TransformGroup
TransformGroup animGroup = new TransformGroup();
animGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

// ScaleInterpolator
Alpha myAlpha = new Alpha(-1, 5000);
ScaleInterpolator interpol = new ScaleInterpolator(myAlpha, animGroup);
BoundingSphere bounds = new BoundingSphere();
interpol.setSchedulingBounds(bounds);

// Transform3D
Transform3D anim = new Transform3D();
anim.setScale(new Vector3d(1, 20, 1));
interpol.setTransformAxis(anim);
animGroup.addChild(interpol);

//===== THE RETURN =====
animGroup.addChild(bar);
objRoot.addChild(animGroup);
objRoot.compile();

================== /my code ==================